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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Components of Basic and Diluted Earnings Per Share
The components of basic and diluted earnings per share for the years ended December 31, are as follows:
 
 
 
2017
 
2016
 
2015
 
 
(in thousands)
Weighted average outstanding shares of common stock, basic
 
15,762

 
15,663

 
15,566

Dilutive effect of unvested restricted stock units
 
—

 
—

 
76

Weighted average outstanding shares of common stock, diluted
 
15,762

 
15,663

 
15,642